CN105098344A - Multi-notch ultra-wide band antenna with mechanically adjusted metasurfaces - Google Patents
Multi-notch ultra-wide band antenna with mechanically adjusted metasurfaces Download PDFInfo
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Abstract
The invention provides a multi-notch ultra-wide band antenna with mechanically adjusted metasurfaces, and aims at solving the technical problem of a single function of an existing ultra-wide band antenna caused by irreversible notched characteristics and nonadjustable notch frequency. The multi-notch ultra-wide band antenna comprises an ultra-wide band antenna unit (1) and different detachable metasurfaces (2), wherein the metasurfaces (2) are selectively fixed on the lower surface of the ultra-wide band antenna unit; the ultra-wide band antenna unit (1) is composed of a first dielectric substrate (11), a radiation patch (12) and a feeder line (13); the radiation patch (12) and the feeder line (13) are respectively printed on the upper surface and the lower surface of the first dielectric substrate (11); a bilateral composite radiation slot line is arranged at the center of the radiation patch (12); each metasurface (2) is composed of a second dielectric substrate (21) and a T-shaped resonant element (22); and each T-shaped resonant element (22) is printed on the lower surface of each second dielectric substrate, and is formed by periodical arrangement of split ring resonators in different forms. The multi-notch ultra-wide band antenna has the characteristics of being convenient to process, high in choosability and suitable for the fields such as wireless communication; and notches in different frequency bands can be realized.
Description
Technical field
The invention belongs to antenna technical field, relate to many trap UWB antennas on the super clever surface of a kind of machinery adjustment, by the super clever surface of mechanical load different structure on ultra-wideband antenna unit, realize producing the electromagnetic absorption of signal disturbing to other narrowband systems.
Technical background
Early stage super-broadband tech is mainly used in every military fields such as military communication, radar detection and location, and since ultra wideband frequency in 2002 is first to civilian opening, ultra-wideband communications just becomes very powerful and exceedingly arrogant academia's topic.Compare traditional communication technology, ultra-wideband antenna has lot of advantages, such as work bandwidth (3.1-10.6GHz), and frequency band, through-put power are high, ability of anti-multipath is strong.But the existing frequency ranges such as ultra wideband frequency and WiMAX (3.3-3.69GHz), WLAN (5.15-5.825GHz) and satellite downlink frequency range (7.25-7.75GHz) create overlapping, interference will inevitably be produced to these signals.
In order to avoid ultra-broadband signal produces interference to other frequency range, need to improve ultra-wideband communication system, make it filter and may produce with existing narrowband systems the frequency range disturbed.At present, the mode that ultra-wideband communication system can be made to have filtering characteristic has two kinds: one is to ultra-wideband antenna unit combination band stop filter, and another kind adopts notch technology.Wherein, mode one adopts the form of ultra-wideband antenna system loads filter, makes ultra-wideband antenna have stopband characteristic in specific frequency range, thus the electromagnetic wave of some frequency range of filtering; Mode two adopts notch technology, trap structure is introduced in the structure of ultra-wideband antenna, such as: etch on radiation metal paster or on medium substrate, print the difform line of rabbet joint, make ultra-wide antenna have larger reflection coefficient in corresponding frequency range, thus antenna can not be worked in these frequency bands.Although mode one achieves the filtering of ultra-wideband antenna to some arrowband, considerably increase cost and the complexity of whole communication system; Relative mode one, existing notch technology is more effectively simple, and this makes notch technology be used widely.The method of existing generation trap has a lot, one method is on medium substrate, print " L " ring shape metal patch, another kind method etches the line of rabbet joint in radiation patch, as " L " shape line of rabbet joint, " U " shape line of rabbet joint, the in-line line of rabbet joint and split ring resonator, by changing the structure of ultra-wideband antenna, absorb the electromagnetic wave of special frequency channel, in special frequency channel, there is filter function to realize ultra-wideband antenna.As Chinese patent application, application notification number is CN103441327A, name is called the invention of " many trap UWB antennas ", disclose a kind of many trap UWB antennas, this invention by printing " L " shape metal minor matters on medium substrate, make ultra-wideband antenna be band resistance state in WiMAX and WLAN two-band, when avoiding ultra-wideband antenna work, interference is produced to existing narrowband systems.And for example Chinese patent application, application notification number CN104485504A, name is called the invention of " a kind of bluetooth ultra-wideband antenna with two trap characteristic ", disclose a kind of bluetooth ultra-wideband antenna with two trap characteristic, by etching circular recess in radiation patch, ultra-wideband antenna being reached and realizes trap at WiMAX and Bluetooth band.For another example XinLiu in 2013 at ProgressInElectromagneticsResearchLetters, Vol.43,125 – 135, deliver the article that name is called " TheBandNotchSensitivityofVivaldiAntennaTowardsCSRRs ", complementary type split ring resonator is etched near feed end in the radiation patch of ultra broadband Vivaldi antenna, make ultra-wideband antenna have trap characteristic, thus avoid ultra-wideband antenna to produce interference to overlapped frequency bands.
Although above-mentioned prior art can realize the trap characteristic of ultra-wideband antenna, but the mode of this direct loading all needs to design corresponding resonance structure according to specific frequency, the resonance structure that size is fixed is once etch into the radiation patch of antenna or be printed on medium substrate, destroy the structure of ultra-wideband antenna unit, mean that the trap characteristic of the ultra-wideband antenna be designed to determines nonadjustable, trap frequency range is uniquely immutable.A ultra-wideband antenna can only carry out trap to one or two fixing frequency ranges, function singleness, when user needs to carry out trap to other frequency ranges, just need to redesign resonance structure, again process the ultra-wideband antenna that can carry out trap to target frequency bands, this can the Practical of ultra-wideband antenna of trap in a certain degree impact.
Summary of the invention
The object of the invention is the deficiency overcoming the existence of above-mentioned prior art, proposes many trap UWB antennas on the super clever surface of a kind of machinery adjustment.For solving existing ultra-wideband antenna because trap characteristic is irreversible and the technical problem of the non-adjustable function singleness caused of trap frequency, ensureing under the prerequisite that ultra-wideband antenna unit normally works, by the mode on mechanical load different super clever surface, trap is being carried out to different frequency range or multiple frequency range.
For achieving the above object, the technical scheme that the present invention takes is:
Many trap UWB antennas on the super clever surface of a kind of machinery adjustment, comprise ultra-wideband antenna unit 1, it is by first medium substrate 11, the feed line 13 of the radiation patch 12 and lower surface that are printed on first medium substrate 11 upper surface forms, the centre of described radiation patch 12 offers the symmetrical recombination radiation line of rabbet joint, for realizing ultrabroad band characteristic, it is characterized in that: on the top of the lower surface of first medium substrate 11, selection is fixed with the super clever surface 2 of dismountable difference, for realizing one or more stopband, this super clever surface 2 is made up of second medium substrate 21 and the T-shaped resonant element 22 being printed on its lower surface.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, described first medium substrate 11 and second medium substrate 21 adopt the dielectric material of identical dielectric constant.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, the described recombination radiation line of rabbet joint forms by the exponential fade line of rabbet joint with its rectangle line of rabbet joint be connected successively and the circular line of rabbet joint.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, described feed line 13 is formed by connecting by two sections of orthogonal microstrip lines and a fan-shaped offset of microstrip stub.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, described T-shaped resonant element 22 is made up of the split ring resonator of periodic arrangement.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, described split ring resonator adopts single-frequency split ring resonator 3 or double frequency split ring resonator 4 or three split ring resonators 5 frequently, and wherein single-frequency split ring resonator 3 forms by an opening outer shroud is nested with opening inner ring; Double frequency split ring resonator 4 forms by an opening outer shroud is nested with composite anti-blocking inner ring; Multifrequency split ring resonator 5 forms by ring in an opening outer shroud, an opening is nested with composite anti-blocking inner ring.
Many trap UWB antennas on the super clever surface of above-mentioned machinery adjustment, described super clever surface 2 adopts the first super clever surface 31 or the second super clever surperficial 32 or the three super clever surperficial 33 or the four super clever surperficial 41 or the five super clever surperficial 51, wherein:
The first super clever surface 31, for carrying out trap to WiMAX frequency range, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is arranged by multiple single-frequency split ring resonator 3 and forms;
The second super clever surface 32, for carrying out trap to WLAN frequency range, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is arranged by multiple single-frequency split ring resonator 3 to form, and wherein vertical portion adopts vertical double spread pattern;
The three super clever surface 33, for carrying out trap to satellite downlink frequency range, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is arranged by multiple single-frequency split ring resonator 3 to form, and wherein vertical portion upper semisection adopts vertical double spread pattern;
The four super clever surface 41, for carrying out trap to WiMAX frequency range and WLAN frequency range simultaneously, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is arranged by multiple double frequency split ring resonator 4 to form;
The five super clever surface 51, for carrying out trap to WiMAX frequency range, WLAN frequency range and satellite downlink frequency range simultaneously, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed be by multiple three frequently split ring resonators 5 arrange and form.
Compared with prior art, the present invention has the following advantages:
1. the present invention is owing to have employed the method for exterior mechanical installation; super clever surface is mechanically mounted on the back side of ultra-wideband antenna unit; with existing directly print metal minor matters at ultra-wideband antenna unit or etch gap reach compared with the technology of trap; protect the structure of ultra-wideband antenna unit; make itself ultra wideband of maintenance that ultra-wideband antenna unit can be good, make ultra-wideband antenna have reversible trap characteristic.
2. present invention employs the method for installing different super clever surface in ultra-wideband antenna unit back side selectivity, realize the trap to different frequency range, with existing directly print metal minor matters at ultra-wideband antenna unit or etch gap reach compared with the technology of trap, one-segment trap can be realized by changing different super clever surface, two-band trap or three frequency range traps, there is the advantage of multi-functional trap, compensate for a trap antenna in prior art and can only realize the shortcoming of a kind of one-segment trap or a kind of two-band trap, the trap frequency of ultra-wideband antenna is had and facilitates adjustability.
3. present invention employs the method on the super clever surface of ultra-wideband antenna unit back side mechanical erection, have easy to process, the advantages such as alternative is strong, compared with existing notch technology, due to the strong coupling on super clever surface, resonance frequency band is very narrow, makes the trap characteristic of ultra-wideband antenna have the feature of high q-factor.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of embodiments of the invention one.
Fig. 2 is the structural representation of three kinds of split ring resonators of the present invention; Wherein, Fig. 2 (a) is single-frequency split ring resonator, and Fig. 2 (b) is double frequency split ring resonator, and Fig. 2 (c) is three frequency split ring resonators.
Fig. 3 is the structural representation on five kinds of super clever surfaces of the present invention; Wherein, Fig. 3 (a) is the schematic diagram on the first super clever surface, Fig. 3 (b) is the schematic diagram on the second super clever surface, Fig. 3 (c) is the schematic diagram on the three super clever surface, Fig. 3 (d) is the schematic diagram on the four super clever surface, and Fig. 3 (e) is the five super clever surperficial schematic diagram.
Fig. 4 be ultra-wideband antenna unit of the present invention do not load super clever surface with load different structure super clever surperficial time VSWR comparison diagram; Wherein Fig. 4 (a)-Fig. 4 (e) be respectively ultra-wideband antenna unit do not load super clever surface with load the first super clever surface, the second super clever surface, the three super clever surperficial, the four super clever surperficial and the five super clever surperficial time VSWR comparison diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment one
With reference to Fig. 1, the present invention forms by ultra-wideband antenna unit 1 with by the different super clever surface 2 that nonmetallic connectors is fixed on its lower surface, super clever surface 2 employings the first super clever surperficial 31 of the present embodiment.Wherein ultra-wideband antenna unit 1 is made up of first medium substrate 11, the feed line 13 of radiation patch 12 and lower surface that is printed on first medium substrate 11 upper surface, described first medium substrate 11 adopts the length of side to be 80mm, thickness is 0.6mm, and dielectric constant is the FR4 square dielectric-slab of 4.4; Radiation patch 12 adopts metal copper material, the symmetrical recombination radiation line of rabbet joint is provided with in the middle part of it, this recombination radiation line of rabbet joint by the Radius at distance 11mm place, first medium substrate 11 lower edge be 3.7mm the circular line of rabbet joint, with circular recess alignment is connected the rectangle line of rabbet joint successively and tapered slot forms, tapered slot extends to the top of first medium substrate 11, and tapered slot top end opening is 60mm.Feed line 13 is positioned at the back side of first medium substrate 11, and first medium substrate 11 distance from bottom right-hand member is 26.3mm place is distributing point, connects outer, coaxial line.Vertically having long from distributing point is 14mm, and wide be the microstrip line of 0.7mm, and it is 14mm that transverse direction connects a segment length successively, and width is the microstrip line of 0.7mm, and the terminal of feed line 13 is central angles is 90 degree, and radius is the fan-shaped offset of microstrip stub of 2.6mm, passes through couple feed.Dismountable super clever surface 2 is fixed with along its hanging at the lower surface of first medium substrate 11, super clever surface 2 is made up of second medium substrate 21 and the T-shaped resonant element 22 be printed in the middle part of second medium substrate 21, wherein second medium substrate 21 adopts thickness to be 0.2mm, long is 80mm, wide is 36mm, dielectric constant is the Rectangular Enclosure with Participating Media plate of the FR4 of 4.4, T-shaped resonant element 22 is formed by multi-form split ring resonator periodic arrangement, its longitudinal symmetry axis overlaps with longitudinal symmetry axis of the recombination radiation line of rabbet joint, the size of split ring resonator and the relation of resonance frequency as follows:
wherein L
totalthe overall size of resonant ring, f
notchthe centre frequency of trap frequency range, ε
effbe the dielectric constant of dielectric-slab, the present embodiment adopts single-frequency split ring resonator 3, and its structure is as shown in Fig. 2 (a).
With reference to figure 2 (a), single-frequency split ring resonator 3, forms by an opening inner ring is nested with opening outer shroud, and these two rings intercouple generation resonance frequency, regulate required trap frequency by the size adjusting inner and outer rings.When needs carry out trap to WiMAX frequency range (3.3-3.69GHz), the size of split ring resonator 3 is arranged as follows: inner and outer rings and A/F are d
1, d
1equal 0.4mm, the external diameter r of outer shroud
1for 3.5mm, the external diameter r of inner ring
2for 2.8mm, inner and outer rings slit complementary.
With reference to figure 3 (a), super clever surface 2 adopts the first super clever surface 31, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed periodically is arranged in "T"-shaped from top to bottom by 5 identical single-frequency split ring resonators 3, wherein horizontally-arranged have 3 rings, vertical setting of types has 2 rings, the 9mm of the centre distance of adjacent ring, upwards, Open Side Down for inner ring for outer ring opening.The first super clever surface 31 is mechanically loaded to the back of ultra-wideband antenna unit 1, realizes the trap to WiMAX frequency range (3.3-3.69GHz).
Embodiment two
Embodiment two is identical with the structure of the ultra-wideband antenna unit 1 that embodiment one adopts, and only makes an adjustment the size of single-frequency split ring resonator 3 of the T-shaped resonant element 22 of composition and arrangement mode.Be specially:
With reference to figure 2 (a), when needs carry out trap to WLAN frequency range (5.15-5.825GHz), arrange as follows by the size of split ring resonator 3: inner and outer rings width, ring A/F is d
1,d
1equal 0.25mm, the external diameter r of outer shroud
1for 2.2mm, the external diameter r of inner ring
2for 1.65mm.
With reference to figure 3 (b), described super clever surface 2 adopts the second super clever surface 32, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is made up of 12 identical single-frequency split ring resonators 3, vertically be two rows and periodically in "T"-shaped arrangement, wherein horizontally-arranged have 6, and vertical each row has 3, the 5mm of the centre distance of adjacent ring, upwards, Open Side Down for inner ring for outer ring opening.Identical with load mode in embodiment one, the second super clever surface 32 is mechanically loaded to the back of ultra-wideband antenna unit 1, realizes the trap to WLAN frequency range (5.15-5.825GHz).
Embodiment three
Embodiment three is identical with the structure of the ultra-wideband antenna unit 1 that embodiment one adopts, and only makes an adjustment the size of single-frequency split ring resonator 3 of the T-shaped resonant element 22 of composition and arrangement mode.Be specially:
With reference to figure 2 (a), when needs carry out trap to satellite downlink frequency range (7.25-7.75GHz), the size of split ring resonator 3 is arranged as follows: inner and outer rings width and ring A/F are d
1,d
1equal 0.2mm, the external diameter r of outer shroud
1for 1.69mm, the external diameter r of inner ring
2for 1.24mm.
With reference to figure 3 (c), super clever surface 2 adopts the three super clever surperficial 33, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is that wherein horizontally-arranged have 4 rings by 16 identical single-frequency split ring resonators 3 in "T"-shaped arrangement, and vertical portion upper semisection adopts vertically double, each row has 4, lower semisection adopts single arrangement, has 4, the 4mm of the centre distance of adjacent ring, upwards, Open Side Down for inner ring for outer ring opening.Identical with load mode in embodiment one, by the three super clever surface 33 be mechanically loaded to the back of ultra-wideband antenna unit 1, realize the trap to satellite downlink frequency range (7.25-7.75GHz).
Embodiment four
Embodiment four is identical with the structure of the ultra-wideband antenna unit 1 that embodiment one adopts, only the structure of split ring resonator of the T-shaped resonant element 22 of composition and size are made an adjustment, the split ring resonator of the present embodiment adopts double frequency split ring resonator 4, and its structure is as shown in Fig. 2 (b).
With reference to figure 2 (b), double-frequency resonance ring 4 is widened the inner and outer rings distance of Simple Harmonics ring 3, make the independent resonance of inner and outer rings, produce two different resonance frequencys, this two frequencies are regulated by the size of the size and increase inner ring that adjust outer shroud, be the radius increasing outer shroud by the mode widening inner and outer ring distance, reduce the radius of inner ring simultaneously.Because the size of resonance frequency and resonant ring is inversely proportional to, inner ring radius reduces, and its size reduces, and resonance frequency increases.In order to can while increase inner and outer rings distance, interior ring size reduce, and inner ring is extended internally and forms compound inner ring.Need to WiMAX frequency range (3.3-3.69GHz) and WLAN frequency range (5.15-5.825GHz) simultaneously trap time, the size of double frequency split ring resonator 4 arranges as follows: compound inner ring and outer ring width and ring A/F are d
2,d
2equal 0.4mm, the external diameter r of outer shroud
3for 3.7mm, compound inner ring large ring external diameter r
4for 2.65mm, the little ring external diameter r of compound inner ring
5for 1.9mm.
With reference to figure 3 (d), super clever surface 2 adopts the four super clever surperficial 41, the T-shaped resonant element 22 that its second medium substrate 21 lower surface is printed is made up of 5 identical double frequency split ring resonators 4, arrangement mode is identical with embodiment one, adjacent ring centre distance is 8mm, upwards, Open Side Down for compound inner ring for outer ring opening.Identical with load mode in embodiment one, by the four super clever surface 41 be mechanically loaded to the back of ultra-wideband antenna unit 1, realize trap while of WiMAX frequency range (3.3-3.69GHz) and WLAN frequency range (5.15-5.825GHz).
Embodiment five
Embodiment five is identical with the structure of the ultra-wideband antenna unit 1 that embodiment one adopts, only the structure of split ring resonator of the T-shaped resonant element 51 of composition and size are made an adjustment, the split ring resonator of the present embodiment adopts three frequency split ring resonators 5, and its structure is as shown in Fig. 2 (c).
With reference to figure 2 (c), three frequently resonant rings 5 are that the monocycle of a nested slit complementary on the basis of double-frequency resonance ring 4 realizes three resonance frequently, we by adjust outer, in, the size of inner ring regulates this three frequencies.Need to WiMAX frequency range (3.3-3.69GHz), WLAN frequency range (5.15-5.825GHz) and satellite downlink wave band (7.25-7.75GHz) simultaneously three frequently trap time, the size of three split ring resonators 5 frequently arranges as follows: compound inner ring, middle ring and outer ring width and ring A/F are d
3, d
3equal 0.3mm, the external diameter r of outer shroud
6for 3.78mm, the external diameter r of middle ring
7for 2.78mm, compound inner ring large ring external diameter r
8for 1.73mm, the little ring external diameter r of compound inner ring
9for 1.13mm.
With reference to figure 3 (e), super clever surface 2 adopts the five super clever surperficial 51, the T-shaped resonant element 22 printed of its second medium substrate 21 lower surface by 5 identical three frequently split ring resonators 5 form, arrangement mode is identical with embodiment one, adjacent ring centre distance is 8mm, upwards, Open Side Down for middle ring for outer ring opening, compound inner ring opening upwards.Identical with load mode in embodiment one, by the five super clever surface 51 be mechanically loaded to the back of ultra-wideband antenna unit 1, complete WiMAX frequency range (3.3-3.69GHz), WLAN frequency range (5.15-5.825GHz) and satellite downlink wave band (7.25-7.75GHz) three traps frequently simultaneously.
More than describing is only five specific embodiments invented; obviously for those skilled in the art; after having understood content of the present invention and principle; all may when not deviating from inventive principle, structure; carry out the various correction in form and details and change, but these corrections based on inventive concept and change are still within claims of the present invention.
Below in conjunction with the simulation experiment result, technique effect of the present invention is described in further detail.
1. emulate content: the present invention adopts ANSOFTHFSS15.0 electromagnetic simulation software to carry out full-wave simulation, respectively simulation comparison is carried out to the VSWR after ultra-wideband antenna unit 1 and ultra-wideband antenna unit 1 load different super clever surface textures, its result is respectively as Fig. 4 (a), Fig. 4 (b), Fig. 4 (c), shown in Fig. 4 (d) He Fig. 4 (e), the transverse axis of coordinate is ultratvide frequency band (3-10GHz), the longitudinal axis represents standing-wave ratio (VSWR), wherein solid line representative does not load the change curve of VSWR with frequency of the ultra-wideband antenna unit 1 on super clever surface, represented by dotted arrows ultra-wideband antenna unit 1 loads the change curve of VSWR with frequency on super clever surface.
2. simulation result:
With reference to Fig. 4 (a), as can be seen from simulation result, at 3.45-4GHz place, load the first super clever surperficial 31 time, its VSWR obvious rising compared with not loading the VSWR of super clever surperficial ultra-wideband antenna unit 1, the first super clever surface 31 can limit antenna at this band radiation electromagnetic wave, therefore, ultra-wideband antenna has stopband characteristic in this frequency range, other narrowband systems of ultra-wideband antenna and WiMAX frequency range can be avoided to produce and disturb.
With reference to Fig. 4 (b), as can be seen from simulation result, at 5-5.62GHz place, load the second super clever surperficial 32 time, its VSWR obvious rising compared with not loading the VSWR of super clever surperficial ultra-wideband antenna unit 1, the second super clever surface 32 can limit antenna at this band radiation electromagnetic wave, therefore, ultra-wideband antenna has stopband characteristic in this frequency range, other narrowband systems of ultra-wideband antenna and WLAN frequency range can be avoided to produce and disturb.
With reference to Fig. 4 (c), as can be seen from simulation result, at 7.53-7.94GHz place, load three super clever surperficial 33 time, its VSWR with do not load super clever surface ultra-wideband antenna unit 1 VSWR compared with obvious rising, the three super clever surperficial 33 can limit antenna at this band radiation electromagnetic wave, therefore, ultra-wideband antenna has stopband characteristic in this frequency range, other narrowband systems of ultra-wideband antenna and satellite downlink frequency range can be avoided to produce and disturb.
With reference to Fig. 4 (d), as can be seen from simulation result, at 3.26-3.46GHz place and 5.06-5.6GHz two frequency range places, load four super clever surperficial 41 time, its VSWR obvious rising compared with not loading the VSWR of super clever surperficial ultra-wideband antenna unit 1, the four super clever surface 41 can limit antenna radiated electromagnetic wave in this two-band, therefore, ultra-wideband antenna has stopband characteristic in this two-band, other narrowband systems of ultra-wideband antenna and WiMAX frequency range and WLAN frequency range can be avoided simultaneously to produce and disturb.
With reference to Fig. 4 (e), as can be seen from simulation result, at 3-3.64GHz, 5.32-5.86GHz and 6.9-7.75GHz tri-frequency ranges, load five super clever surperficial 51 time, its VSWR obvious rising compared with not loading the VSWR of super clever surperficial ultra-wideband antenna unit 1, the five super clever surface 51 can limit antenna radiated electromagnetic wave in these three frequency ranges, therefore, ultra-wideband antenna has stopband characteristic at these three frequency places, ultra-wideband antenna unit 1 can be avoided simultaneously to produce with other narrowband systems of WiMAX frequency range, WLAN frequency range and satellite downlink frequency range and disturb.
Claims (7)
1. many trap UWB antennas on the super clever surface of machinery adjustment, comprise ultra-wideband antenna unit (1), it is by first medium substrate (11), be printed on the radiation patch (12) of first medium substrate (11) upper surface and feed line (13) composition of lower surface, the centre of described radiation patch (12) offers the symmetrical recombination radiation line of rabbet joint, for realizing ultrabroad band characteristic, it is characterized in that: on the top of the lower surface of first medium substrate (11), selection is fixed with the super clever surface (2) of dismountable difference, for realizing one or more stopband, this super clever surface (2) is made up of second medium substrate (21) and the T-shaped resonant element (22) that is printed on its lower surface.
2. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 1, is characterized in that: described first medium substrate (11) and second medium substrate (21) adopt the dielectric material of identical dielectric constant.
3. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 1, is characterized in that: the described recombination radiation line of rabbet joint forms by the exponential fade line of rabbet joint with its rectangle line of rabbet joint be connected successively and the circular line of rabbet joint.
4. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 1, is characterized in that: described feed line (13) is formed by connecting by two sections of orthogonal microstrip lines and a fan-shaped offset of microstrip stub.
5. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 1, is characterized in that: described T-shaped resonant element (22) is made up of the split ring resonator of periodic arrangement.
6. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 5, it is characterized in that: described split ring resonator adopts single-frequency split ring resonator (3) or double frequency split ring resonator (4) or three split ring resonator (5) frequently, wherein single-frequency split ring resonator (3) forms by an opening outer shroud is nested with opening inner ring; Double frequency split ring resonator (4) forms by an opening outer shroud is nested with composite anti-blocking inner ring; Multifrequency split ring resonator (5) forms by ring in an opening outer shroud, an opening is nested with composite anti-blocking inner ring.
7. many trap UWB antennas on the super clever surface of machinery adjustment according to claim 1, it is characterized in that: described super clever surface (2) adopt the first super clever surface (31) or the second super clever surface (32) or the three super clever surperficial (33) or the four super clever surperficial (41) or the five super clever surperficial (51), wherein:
The first super clever surface (31), for carrying out trap to WiMAX frequency range, the T-shaped resonant element (22) that its second medium substrate (21) lower surface is printed is formed by the arrangement of multiple single-frequency split ring resonator (3);
The second super clever surface (32), for carrying out trap to WLAN frequency range, the T-shaped resonant element (22) that its second medium substrate (21) lower surface is printed is formed by the arrangement of multiple single-frequency split ring resonator (3), and wherein vertical portion adopts vertical double spread pattern;
The three super clever surface (33), for carrying out trap to satellite downlink frequency range, the T-shaped resonant element (22) that its second medium substrate (21) lower surface is printed is formed by the arrangement of multiple single-frequency split ring resonator (3), and wherein vertical portion upper semisection adopts vertical double spread pattern;
The four super clever surface (41), for carrying out trap to WiMAX frequency range and WLAN frequency range simultaneously, the T-shaped resonant element (22) that its second medium substrate (21) lower surface is printed is formed by the arrangement of multiple double frequency split ring resonator (4);
The five super clever surface (51), for carrying out trap to WiMAX frequency range, WLAN frequency range and satellite downlink frequency range simultaneously, the T-shaped resonant element (22) that its second medium substrate (21) lower surface is printed is formed by multiple three split ring resonator (5) arrangements frequently.
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| CN106785477A (en) * | 2017-03-18 | 2017-05-31 | 电子科技大学 | A kind of double-frequency broadband wave absorbing device |
| CN109031310A (en) * | 2018-08-16 | 2018-12-18 | 南京信息工程大学 | S-band precipitation particles scatterometry instrument, measuring system and measurement method |
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| CN110967847A (en) * | 2019-12-20 | 2020-04-07 | 北京理工大学 | Complex amplitude spatial light modulator and working method thereof |
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Cited By (10)
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|---|---|---|---|---|
| CN106785477A (en) * | 2017-03-18 | 2017-05-31 | 电子科技大学 | A kind of double-frequency broadband wave absorbing device |
| WO2020015711A1 (en) * | 2018-07-19 | 2020-01-23 | Huawei Technologies Co., Ltd. | Electronically beam-steerable full-duplex phased array antenna |
| CN112272901A (en) * | 2018-07-19 | 2021-01-26 | 华为技术有限公司 | Electromagnetic wave beam scanning full duplex phased array antenna |
| US10950940B2 (en) | 2018-07-19 | 2021-03-16 | Huawei Technologies Co., Ltd. | Electronically beam-steerable full-duplex phased array antenna |
| CN112272901B (en) * | 2018-07-19 | 2022-03-08 | 华为技术有限公司 | Electromagnetic wave beam scanning full duplex phased array antenna |
| CN109031310A (en) * | 2018-08-16 | 2018-12-18 | 南京信息工程大学 | S-band precipitation particles scatterometry instrument, measuring system and measurement method |
| CN110061358A (en) * | 2019-01-02 | 2019-07-26 | 云南大学 | The back-shaped left-handed material unit of two-band circle |
| CN110061358B (en) * | 2019-01-02 | 2023-12-15 | 云南大学 | Double-frequency band round-shaped left-handed material unit |
| CN110729565A (en) * | 2019-10-29 | 2020-01-24 | Oppo广东移动通信有限公司 | Array lens, lens antenna, and electronic apparatus |
| CN110967847A (en) * | 2019-12-20 | 2020-04-07 | 北京理工大学 | Complex amplitude spatial light modulator and working method thereof |
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